sunxi: Complete mmc pin mux for each supported platform, configured with Kconfig

Sunxi platforms have different possible mmc pin mux setups (except for mmc0),
which are different across platforms.

This lets users configure which is used through the CONFIG_MMC*_PINS Kconfig
options. This is especially relevant when a second (in addition to mmc0) port
is used and CONFIG_MMC_SUNXI_SLOT_EXTRA is enabled.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

4 files changed, 171 insertions, 6 deletions

diff --git a/arch/arm/include/asm/arch-sunxi/gpio.h b/arch/arm/include/asm/arch-sunxi/gpio.h
index a6b15d6..f227044 100644
--- a/arch/arm/include/asm/arch-sunxi/gpio.h
+++ b/arch/arm/include/asm/arch-sunxi/gpio.h
@@ -145,26 +145,36 @@ enum sunxi_gpio_number {
 #define SUNXI_GPA_EMAC		2
 #define SUN6I_GPA_GMAC		2
 #define SUN7I_GPA_GMAC		5
+#define SUN6I_GPA_SDC2		5
+#define SUN6I_GPA_SDC3		4
 
 #define SUNXI_GPB_TWI0		2
 #define SUN4I_GPB_UART0		2
 #define SUN5I_GPB_UART0		2
 
 #define SUNXI_GPC_SDC2		3
+#define SUN6I_GPC_SDC3		4
 
+#define SUN8I_GPD_SDC1		3
 #define SUNXI_GPD_LCD0		2
 #define SUNXI_GPD_LVDS0		3
 
+#define SUN5I_GPE_SDC2		3
+
 #define SUNXI_GPF_SDC0		2
 #define SUNXI_GPF_UART0		4
 #define SUN8I_GPF_UART0		3
 
+#define SUN4I_GPG_SDC1		4
 #define SUN5I_GPG_SDC1		2
+#define SUN6I_GPG_SDC1		2
+#define SUN8I_GPG_SDC1		2
 #define SUN5I_GPG_UART1		4
 
+#define SUN4I_GPH_SDC1		5
 #define SUN6I_GPH_UART0		2
 
-#define SUN4I_GPI_SDC3		2
+#define SUNXI_GPI_SDC3		2
 
 #define SUN6I_GPL0_R_P2WI_SCK	3
 #define SUN6I_GPL1_R_P2WI_SDA	3
@@ -189,6 +199,7 @@ int sunxi_gpio_get_cfgbank(struct sunxi_gpio *pio, int bank_offset);
 int sunxi_gpio_get_cfgpin(u32 pin);
 int sunxi_gpio_set_drv(u32 pin, u32 val);
 int sunxi_gpio_set_pull(u32 pin, u32 val);
+int sunxi_name_to_gpio_bank(const char *name);
 int sunxi_name_to_gpio(const char *name);
 #define name_to_gpio(name) sunxi_name_to_gpio(name)
 
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 98228e8..ccc2080 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -212,6 +212,25 @@ config MMC3_CD_PIN
 	---help---
 	See MMC0_CD_PIN help text.
 
+config MMC1_PINS
+	string "Pins for mmc1"
+	default ""
+	---help---
+	Set the pins used for mmc1, when applicable. This takes a string in the
+	format understood by sunxi_name_to_gpio_bank, e.g. PH for port H.
+
+config MMC2_PINS
+	string "Pins for mmc2"
+	default ""
+	---help---
+	See MMC1_PINS help text.
+
+config MMC3_PINS
+	string "Pins for mmc3"
+	default ""
+	---help---
+	See MMC1_PINS help text.
+
 config MMC_SUNXI_SLOT_EXTRA
 	int "mmc extra slot number"
 	default -1
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index af8cf11..0c9d3b8 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -71,10 +71,11 @@ int dram_init(void)
 static void mmc_pinmux_setup(int sdc)
 {
 	unsigned int pin;
+	__maybe_unused int pins;
 
 	switch (sdc) {
 	case 0:
-		/* D1-PF0, D0-PF1, CLK-PF2, CMD-PF3, D3-PF4, D4-PF5 */
+		/* SDC0: PF0-PF5 */
 		for (pin = SUNXI_GPF(0); pin <= SUNXI_GPF(5); pin++) {
 			sunxi_gpio_set_cfgpin(pin, SUNXI_GPF_SDC0);
 			sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
@@ -83,30 +84,150 @@ static void mmc_pinmux_setup(int sdc)
 		break;
 
 	case 1:
-		/* CMD-PG3, CLK-PG4, D0~D3-PG5-8 */
+		pins = sunxi_name_to_gpio_bank(CONFIG_MMC1_PINS);
+
+#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)
+		if (pins == SUNXI_GPIO_H) {
+			/* SDC1: PH22-PH-27 */
+			for (pin = SUNXI_GPH(22); pin <= SUNXI_GPH(27); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN4I_GPH_SDC1);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		} else {
+			/* SDC1: PG0-PG5 */
+			for (pin = SUNXI_GPG(0); pin <= SUNXI_GPG(5); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN4I_GPG_SDC1);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		}
+#elif defined(CONFIG_MACH_SUN5I)
+		/* SDC1: PG3-PG8 */
 		for (pin = SUNXI_GPG(3); pin <= SUNXI_GPG(8); pin++) {
 			sunxi_gpio_set_cfgpin(pin, SUN5I_GPG_SDC1);
 			sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
 			sunxi_gpio_set_drv(pin, 2);
 		}
+#elif defined(CONFIG_MACH_SUN6I)
+		/* SDC1: PG0-PG5 */
+		for (pin = SUNXI_GPG(0); pin <= SUNXI_GPG(5); pin++) {
+			sunxi_gpio_set_cfgpin(pin, SUN6I_GPG_SDC1);
+			sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+			sunxi_gpio_set_drv(pin, 2);
+		}
+#elif defined(CONFIG_MACH_SUN8I)
+		if (pins == SUNXI_GPIO_D) {
+			/* SDC1: PD2-PD7 */
+			for (pin = SUNXI_GPD(2); pin <= SUNXI_GPD(7); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN8I_GPD_SDC1);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		} else {
+			/* SDC1: PG0-PG5 */
+			for (pin = SUNXI_GPG(0); pin <= SUNXI_GPG(5); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN8I_GPG_SDC1);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		}
+#endif
 		break;
 
 	case 2:
-		/* CMD-PC6, CLK-PC7, D0-PC8, D1-PC9, D2-PC10, D3-PC11 */
+		pins = sunxi_name_to_gpio_bank(CONFIG_MMC2_PINS);
+
+#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)
+		/* SDC2: PC6-PC11 */
 		for (pin = SUNXI_GPC(6); pin <= SUNXI_GPC(11); pin++) {
 			sunxi_gpio_set_cfgpin(pin, SUNXI_GPC_SDC2);
 			sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
 			sunxi_gpio_set_drv(pin, 2);
 		}
+#elif defined(CONFIG_MACH_SUN5I)
+		if (pins == SUNXI_GPIO_E) {
+			/* SDC2: PE4-PE9 */
+			for (pin = SUNXI_GPE(4); pin <= SUNXI_GPD(9); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN5I_GPE_SDC2);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		} else {
+			/* SDC2: PC6-PC15 */
+			for (pin = SUNXI_GPC(6); pin <= SUNXI_GPC(15); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUNXI_GPC_SDC2);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		}
+#elif defined(CONFIG_MACH_SUN6I)
+		if (pins == SUNXI_GPIO_A) {
+			/* SDC2: PA9-PA14 */
+			for (pin = SUNXI_GPA(9); pin <= SUNXI_GPA(14); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN6I_GPA_SDC2);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		} else {
+			/* SDC2: PC6-PC15, PC24 */
+			for (pin = SUNXI_GPC(6); pin <= SUNXI_GPC(15); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUNXI_GPC_SDC2);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+
+			sunxi_gpio_set_cfgpin(SUNXI_GPC(24), SUNXI_GPC_SDC2);
+			sunxi_gpio_set_pull(SUNXI_GPC(24), SUNXI_GPIO_PULL_UP);
+			sunxi_gpio_set_drv(SUNXI_GPC(24), 2);
+		}
+#elif defined(CONFIG_MACH_SUN8I)
+		/* SDC2: PC5-PC6, PC8-PC16 */
+		for (pin = SUNXI_GPC(5); pin <= SUNXI_GPC(6); pin++) {
+			sunxi_gpio_set_cfgpin(pin, SUNXI_GPC_SDC2);
+			sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+			sunxi_gpio_set_drv(pin, 2);
+		}
+
+		for (pin = SUNXI_GPC(8); pin <= SUNXI_GPC(16); pin++) {
+			sunxi_gpio_set_cfgpin(pin, SUNXI_GPC_SDC2);
+			sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+			sunxi_gpio_set_drv(pin, 2);
+		}
+#endif
 		break;
 
 	case 3:
-		/* CMD-PI4, CLK-PI5, D0~D3-PI6~9 : 2 */
+		pins = sunxi_name_to_gpio_bank(CONFIG_MMC3_PINS);
+
+#if defined(CONFIG_MACH_SUN4I) || defined(CONFIG_MACH_SUN7I)
+		/* SDC3: PI4-PI9 */
 		for (pin = SUNXI_GPI(4); pin <= SUNXI_GPI(9); pin++) {
-			sunxi_gpio_set_cfgpin(pin, SUN4I_GPI_SDC3);
+			sunxi_gpio_set_cfgpin(pin, SUNXI_GPI_SDC3);
 			sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
 			sunxi_gpio_set_drv(pin, 2);
 		}
+#elif defined(CONFIG_MACH_SUN6I)
+		if (pins == SUNXI_GPIO_A) {
+			/* SDC3: PA9-PA14 */
+			for (pin = SUNXI_GPA(9); pin <= SUNXI_GPA(14); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN6I_GPA_SDC3);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+		} else {
+			/* SDC3: PC6-PC15, PC24 */
+			for (pin = SUNXI_GPC(6); pin <= SUNXI_GPC(15); pin++) {
+				sunxi_gpio_set_cfgpin(pin, SUN6I_GPC_SDC3);
+				sunxi_gpio_set_pull(pin, SUNXI_GPIO_PULL_UP);
+				sunxi_gpio_set_drv(pin, 2);
+			}
+
+			sunxi_gpio_set_cfgpin(SUNXI_GPC(24), SUN6I_GPC_SDC3);
+			sunxi_gpio_set_pull(SUNXI_GPC(24), SUNXI_GPIO_PULL_UP);
+			sunxi_gpio_set_drv(SUNXI_GPC(24), 2);
+		}
+#endif
 		break;
 
 	default:
diff --git a/drivers/gpio/sunxi_gpio.c b/drivers/gpio/sunxi_gpio.c
index 670af0c..510123f 100644
--- a/drivers/gpio/sunxi_gpio.c
+++ b/drivers/gpio/sunxi_gpio.c
@@ -118,6 +118,20 @@ int gpio_set_value(unsigned gpio, int value)
 	return sunxi_gpio_output(gpio, value);
 }
 
+int sunxi_name_to_gpio_bank(const char *name)
+{
+	int group = 0;
+
+	if (*name == 'P' || *name == 'p')
+		name++;
+	if (*name >= 'A') {
+		group = *name - (*name > 'a' ? 'a' : 'A');
+		return group;
+	}
+
+	return -1;
+}
+
 int sunxi_name_to_gpio(const char *name)
 {
 	int group = 0;